Beating-engine.



Pate'n'fed. Aug. l2, |902.

F. P. MILLER.V BEATI'NG ENGINE.

(Application filed June 6. 1902.)

' (No Modal.)

. NITED STATES ATENT FFICE.

SEATING-ENGINE.

l SPECIFICATION forming part of Letters Patent No. 706,985, dated August12, 1902. i Application led June 6, 1902. Serial yNo. 110,523, (Nomodel.) 4

.To all whom it may concer/z.'

Be it known that I, FRANK P. MILLER, a citizen of the United States, anda resident of Downingtown, Pennsylvania, have invented `certainImprovements in Beating-Engines, of

which the following is a specification.`

The object of my invention is to so construct a beating-en gine thatpaper-stock can be properly reduced land the ground stock separated fromthe material in circulation without interrupting the iiow of the saidma` terial, so that the finished stock can be carried from the machineandnew stock added, making the process of reducing the paper in thebeating-engine continuous.

In the accompanyingdrawings, Figure l is a longitudinal sectional 'Viewof my improved beating-engine. Fig. 2 is a plan view of one end of theengine. Fig. 3 is a sectional view on the line 3 3, Fig. 2; and Fig. 4is an enlarged sectional view on the line 4 4, Fig. 2.

A is a vat separated by the usual midfeather a, forming two channelsthrough which the paper-pulp is traversed. In one of these channels isthe beating-roll B, mounted on a shaft B', carried by suitable bearings,and having knives or blades ZJ.

C C are the knives, mounted in the frame ofthe machine, between whichand the beating-roll the pulp is passed.

A' is the backfall, over which the pulp is carried by the beating-rollB, and directly back of the backfall is a screen D. (Shown clearly inFigs. 3 and 4.) This screen is suspended from a shake-frame D', whichcan be constructed in any suitable manner, and any means may be providedfor shaking the frame so as to agitate the screen. The screen in thepresent instance consists of a frame ql, in whichare assembled a numberof plates d', each plate being recessed at each side, so that when theplates are assembled they form narrow slots for the passage of the pulp,as shown inFig. ,'lhis'screen may be perforated with circular holes orslots of any shape, and the slots may be formed in any manner withoutdeparting from the main feature of my invention. The perforations are ofsuch size as to allow the finished product of the machine to readilypass through the screen into the chest E, which is directly under thescreen and from which the product is withdrawn either by gravity or bymeans of a pump through the outlet-passage e. Beyond the screen D is acontinuation A2015 the backfall A. The untinished product passes overthe screen and over the backfall and circu lates through the channels,to be acted upon again by the beating-rol1. In the present instance thescreen D isarranged on an incline Lfrom the backfall A', so that theunfinished material will more readily pass over it; but

`it will be understood that it may be horizontal or atanyinclinedesired,dependinggreatly upon the material being treated.

-are so arranged and shaped that the ordinary stock will pass betweenthem,while the strings and similar material will be caught by the forks,and when these strings accumulate the operator simply turns the shaft Fand raises the forks and removes the strings, which can either becollected for other paper-stock or reduced in the machine.

The shaft F in the present instance is suspended from the shaftF by armsf', and this shaft is operated by a leverf2, so that the shaft F and itsforks can bemoved out of the Way when desired.

While any suitable means may be provided to shake the screen D, in thepresent instance I have shown one form of shaking means which I will nowproceed to describe. Mounted on pedestals K K on each side of the vatare spring members 7c, from which is suspended by bars 7c the screen D.I is a driven shaft having cams t' thereon, which act against plates c",carried by the spring members 7c k. The shaft I is mounted in suitablebearings and may be driven from the beater-shaft B, if desired, or maybe independentlydriven.

I have shown in Fig. 4 a yielding lip a' on the backfall A', which willoverlap the frame of the screen D, so as to prevent the material fromentering the chest E except through the screen. A like lip a2 may beprovided at the opposite end of the screen, which will overlap theportion A2 of the backl'all.

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screen, and there is sufficient suction caused by the agitation ofthescreen to draw certain particles of the material through the screen.

These particles are those that have been reduced to the desiredcondition, and they pass into the chamber E under the screen and aredrawn out through the pipe, which is connected to any suction device,either gravity or pump, as desired. The balance of the stock circulatesthrough the vat, passing under the roll until it is finally reduced tothe desired condition, when it will pass through the screen into thechamber E.

It will be seen that whenmy improved machine is once set in motion theprocessiscontinuous, and new stock can be added without stopping themechanism. In fact after the machine is once charged with paper-stockthefinished stock can be removed and additional stock added from ytime totime.

The rags, strings, and similar material can be collected by the forks f,While wires, nails, and other heavy foreign matter will collect in thebottom of the vat and in the pocket m, which is provided for thispurpose.

My improved beating-engine is especially` adapted for grinding andreducing old paper and paper-stock; but it will be understood that itmay be used in connection with any vmaterial which can be ground to apulp to form paper.

' In reducing some classes of paper-stock it has been the practicetowork the beatingengine until all the stock is reduced to such aconsistency that it can be transferred toa paper-making machine. It hasbeen found in reducing the paper-stock in this manner that a greatportion of the material was reduced to such an extent that the ber wasdestroyed, and consequently the paper which was made from the pulp wasnot strong. This is entirely obviated by my improved machine, and thepulp as soon as it is in condition to be removed from the machine passesthrough the screen and away from the pulping mechanism. The machine canbe either used as a continuous machine or as an intermittentlyoperatingmachine, according to the desire of the operator. y

. The process of reducing paper-stock consisting in passing the stockthrough a beatingengine and separating the ground stock from thematerialin circulation without interrupting the flow of the saidmaterial is set forth and claimed in a separate application for patentfiled by me on the 13th day of March, 1902,-Serial No. 98,011.

The material is reduced by 4 iroaess .I claim as my invention*- l. Thecombination in abeating-engine, of a beating-roll, a screen back of thebeatingroll, and achest under the screen, substantially as described.

2. The combination in a beating-engine, of a vat, a beating-roll,abackfall, a screen at the rear of the backfall, and a chest under thescreen sothat the material will pass over the screen and the finishedproduct will pass through the perforations of the screen and into thechest, substantially as described.

. The combination in a beating-engine, of a beating-roll, a screen backof the beatingroll, a chest under the screen, and means for agitatingthe screen, substantially as described. 1 y

.4. The combination in a beating-engine, of

a beating-roll, a backfall, a screen at the rear of the backfall andbelowthelevel of the liquid' in the vat, a chest under the screen, andmeans for agitating the screen, substantially as described.

5. The combination in a beating-engine, of a beating-roll, a backfall,an inclined screen at the rear of the backfalland below the level of theliquid in the vat, achamber'under the screen, an outlet for saidchamber, spring members from which the screen is suspended, and a camfor actuating the spring members to agitate the screen, substantially asdescribed.

6. The combination in abeating-engine, of a beating-roll, a backfall,ascreen at the rear of the backfall, and a fork back of the screen uponwhich strings and like material will collect, substantially asdescribed.

7. The combination in a beating-engine, of a beating-roll, a backfall, ascreen atthe rear ofthe backfall, and a fork back of the screen,

with means for raising the fork, substantially as described. i

8. The combination in a beating-engine, of a beating-roll, a backfall,ascreen at the rear of the backfall consisting ofV 'a frame, withnotched plates forming slots when assembled, and achamberdirectly underthe screen, substantially as described.

9. The combination in a beating-engine, of a beating-roll, a backfall,ascreen at the rear of the backfall, a lip on the backfall overlappingthe screen, and means for agitating the screen, substantially asdescribed. p

10. The combination in abeating-engine, of a beating-roll, a backfall, ascreen at the rear ot' the backfall, a continuation of the backfallbeyond the screen, a flexible lip on the backfall overlapping thescreen, and a flexible lip onvthe screen overlapping the continuation ofthe backfall, substantially as described.

In testimony whereof I `have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK P. Minen.

Witnesses: l

WILL. A. BARR, Jos. II. KLEIN.

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